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Up To Date Ebsu Post Utme Pass Question And Answer

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AEC GCE 2016 Agriculture Practical Question And Answer Now Available

1a to determine the present is micro organisms in a soil sample
II. Lime water in flask I will turn Micky and lime water in flask II will remain clear.
II. It shows that there are presence of micro organisms in the soil sample in flask I and there are respiration which turn lime water Micky.
Iv i. Aids decomposition of organic matter
II aids germination of seeds
2a-Solar Power
2b
I)for drying fishes
Ii)to produce electricity
Iii)heating farm steads
2c
Advantages:
I)It is easily available
ii)It is a very neat source of power
iii)it is very useful in farm photosynthesis
Disadvantages
I)it is expensive to store and harness
ii)The energy from the sun can be erratic.its not possible to control
it
iii)only available during the day
3ai)-Comb
3aii)-Wattle
3bi)- Intensive System
3bii)- There is considerable reduction in labour

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Weac physics pratical 2016 answer

xi(cm)|yi(cm)|zi(cm)|W1(Nx10^-2)|W2(Nx10^-2)|u=(w1-w2)(Nx10^-2)|v=(w1-w3)(Nx10-2)
=>1.80|1.50|1.70|3.6|3.00|3.40|0.60|0.20
=>3.80|3.00|3.00|7.6|6.00|6.00|1.60|1.60
=>5.50|4.40|5.00|11.10|8.00|10.00|2.20|1.00
=>7.30|5.90|6.60|14.60|11.80|13.00|2.80|1.40
=>9.20|7.30|8.30|18.40|14.60|16.60|3.80|1.80
=>11.10|8.30|10.00|22.20|16.60|20.00|5.60|2.20
1bi)Relative density, or specific
gravity, is the ratio of the
density (mass of a unit
volume) of a substance to the
density of a given reference
material. Specific gravity
usually means relative
density with respect to water.
ii) given volume of solid immersed
Vsi =1/2*30cm³
=15cm³
Density of liquid (water)ew= 1g/cm³
Acceleration due to gravity, g = 10m/s²
Upthrust, U= eVsi g
U= 1000*(15*10^-6)*10
U=15*10-²
U=0.15N
Weight of solid =mg
=EsVs g
given: Es=2.4g/cm³ (2400kg/m³)
Vs=30cm (30*10^-6 m³)
g=10m/s²
Weight, w=30*10^-6*2400*10
=72*10-²
=0.72N
Reading on spring balance =W-U
=0.72-0.15
=0.57N
2bi)-It is used for Magnifying glass br /> For a magnifying glass to work, the object is
placed at the focal point such that the image
produced is magnified, upright and virtual.
- It is used in aSlide projector: a projector essentially uses a
convex lens to form on a screen a real, magnified
and inverted image of the slide or film. The slide,
being the object, is positioned between the j and 2f
from the lens.
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
(3)
Tabulate pls br /> S/n: 1,2,3,4,5,6
R/ohms: 0.00,1.00,2.00,3.00,4.00,5.00
I/A: 3.00,1.00,0.60,0.45,0.35,0.25
P=(E/I) V ohms^-1: 0.500,1.500,2.500,3.333,4.286,6.000
(3vi)
s=Y1-Y2/X2-X1 = 4-2/3.6-1.5
=2/2.1
=0.952
(3vii)
C = 0.5ohms
(3viii)
Resistance
(3ix)
-I would ensure that the circuit is open after each reading to maintain the E.M.F of the battery
-I would ensure that the Zero Error of the Ammeter is checked and noted
3b)Internal resistance of a cell is the resistance within a
battery, or other voltage source, that causes a
drop in the source voltage when there is a
current. There is, therefore, actual reduction in
the electromotive force of the cell , as well as an
increase in internal resistance.

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